Driving-tool for anchor-sockets for screws



l. D. STINE.

DRIVING TOOL FOR ANCHOR SOCKETS FOR SCREWS.

APPLICATION FILED SEPT. 30, I919.

Patented Mar. 16, 1920.

INVENTOR.

ISAAC 0. 5mm. By WM? A TTORNEY.

UNITED srrA'rns PATENT onnron.

ISAAC D. STINE, OF WATERBURY, CONNECTICUT, ASSIGNOR OF ONE-HALF T0 FRANK HAYES, OF WATERBUR'Y, GONNECTICUT.

DRIVING-TOOL FOR ANCEOR-SOCKETS FOR SCREWS.

Application filed Septem r 30. 1919.

To all whom it may concern Be it known that I, Isaac D. STINE, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented new and useful Improvementsin Driving-Tools for Anchor-Sockets for Screws, of which the following is a specification.

This invention relates to means for anchoring screws, and has for its object to provide improved means for the quick and facile insertion of the anchoring means in anchored position.

Heretofore great difiiculty has been expe rienced in driving anchor sockets for screws into wood, concrete, or other material. The complete burial of the anchor socket in the material and the nature of the socket precludes the use of the ordinary driving tools known in the art. Accurate driving of the socket necessitates a special driving tool. To meet this special need the present invention is directed.

In the accompanying drawing,

Figure 1 is an elevation showing the improved driving tool in actuating position, a part broken away to show the details of the connection with the anchor socket, and

Fig. 2 is a similar view showing the anchor socket embedded in the material, in this case wood.

Referring to the drawings in which similar reference characters are applied to similar parts, A designates a section of wood or other material provided with a hole B bored or otherwise formed slightly smaller than the external diameter of the anchor socket 1. The anchor socket 1 is provided at the bottom with a driving point 5 to assist in penetrating the material into which the socket is driven. The inside of the socket is provided with a hole whose sides are formed with negative screw threads 4 extending to a depth sufficient to receive the part of a screw to be inserted. The upper part of the socket is reamed out to provide a space above the threaded hole surrounded by the wall 6 which forms the top of the whole anchor socket. The object of this space on top is to protect the threads of the hole while driving the anchor socket into embedded position.

The driving tool 2 is formed of the same or a greater diameter than the socket 1. Its external surface is roughened to afford a Specification of Letters Patent.

Patented Mar. 16, 1920.

Serial No. 327,438.

suitable gripping surface to prevent the tool from slipping in the fingers. The top of the driving tool is convexed. An integral central extension 8, provided on the outside with positive screw threads, projects from the bottom. The threads on the extension 3' of the driving tool and the extension itself are of a size to correspond with the threads and the screw hole of the particular anchor socket with which the driving tool is designed to be used. Around this extension there is a fiat contact surface adapted to engage the top of the wall 6 of the anchor socket.

In using this driving tool an anchor socket 1 is secured thereto by turning threads 4 of the screw hole upon the threads of the extension 3, until the top of the anchor socket and the bottom of the driving tool are in close contact. Then the driving projection 5 of the anchor socket is placed in the hole B, the finger and thumb of one hand gripping the driving tool on its roughened surface. lVith the other hand a hammer is applied to the top of the tool until the anchor socket is driven to the required depth. The tool is then withdrawn by separating the positive from the negative threads by turning the tool in the embedded anchor socket. Having thus described my invention and the preferred form of embodying it, and

without limiting myself except as in the appended claims, I claim:

1. In combination, an anchor socket for screws provided at one end with a driving head, the outer surface of said socket being irregular, the inside of said socket being provided with screw threads, and an enlarged recess in the upper part of the socket above the screw thread portion thereof, thus providing a thin w.lled portion adapted to cooperate with a driving tool, and a driving tool for said socket provided with means for positively securing it to said socket.

2-. In combination, an anchor socket for screws provided at one end with a driving head, the outer surface of said socket being irregular, the inside of said socket being provided with screw threads, and an enlarged recess in the upper part of the socket above the screw thread portion thereof, thus providing a thin walled portion adapted to cooperate with a driving tool, and a driving tool for said socket provided with a flat surface adapted to engage the top of the socket and a threaded extension from the center of said flat surface adapted to engage the screw threads of the socket.

3. In combination, an anchor socket for screws, said socket being provided With negative screw threads, and a d'rivingtool therefor, said driving tool llflVlllg a roughened surface for gripping With the fingers and having a convex driving head, and having also means for POSitiXGlY securing the tool to the socket comprising an integral extension externally threaded.

at. A. driving too-1 for anchor sockets for screws designed to be driven into Wood, formed from solid hard metal, its outer surface o ghen d for facile gripp ng ith the fingers, its top having a convex surface to resist the blows of a hammer Without a consequent misshaping of the driving tool; its bottom flat and designed to engage on all parts of its circumference the top of asocket to be driven, and havingan extension from the center of said flat surface, said extension being provided With threads thereon adapted to engage the threads of the socket and to hold said fiat bottom of the tool securely on the top of the anchor socket to be driven.

Subscribed at ld aterbury, in-the county of N ew Haven and State of Connecticut, this 19th day of September, 1919.

ISAAC D. STINE. 1,. .1 

